OpenAI Playground: the generated images disappear once the generation is finished

Chat Completions is exclusively your own developer functions signaled as AI output. There are not OpenAI-hosted tools that run multi-turn autonomously on that endpoint.

Thus, playground is for simulating conversational image editing that you’ve programmed yourself (although the playground also cannot interleave images with text properly as you can do on the API).

For example: Here’s how you can test on the Chat Completions Playground that OpenAI has turned models into to hot garbage:

gpt-5.2, instead, for example:

or calling my custom image creator function, that might be based on the “edits” endpoint, but gives the user control: